The problem
Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Audi E-Tron Quattro and E-Tron Sportback Quattro vehicles. Corrosion in the brake booster may cause the Anti-Lock Brake System (ABS), Electronic Stability Control (ESC), speedometer display, and brake assist to stop functioning.
The risk
A loss of braking assist, ABS, and ESC will increase the effort and distance required to stop, increasing the risk of a crash.
The fix
Dealers will replace the brake booster, free of charge. Owner notification letters were mailed September 30, 2021. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 47R7.
Recall details
| NHTSA campaign | 21V-707 (21V707000) |
|---|---|
| Manufacturer number | 47R7 |
| Manufacturer | Volkswagen Group of America, Inc. |
| Component | Service brakes, hydraulic › Antilock/traction control/electronic limited slip |
| Report date | September 13, 2021 |
| Owners notified | September 30, 2021 |
| Vehicles affected | 38 |
| Initiated by | Manufacturer |
Vehicles covered
Owner complaints about the brakes
Frequently asked questions
Is the recall 21V-707 repair free?
Yes. Audi dealers will fix the problem at no cost: Dealers will replace the brake booster, free of charge. Owner notification letters were mailed September 30, 2021. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 47R7.
How do I know if my car is included?
Not every vehicle of the listed model years is affected — the recall covers 38 vehicles built in a certain window. Check your 17-character VIN with our VIN recall check or at nhtsa.gov/recalls.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.